2. analog
  3. 1384458675

Does anyone use a RUMBLE filter?

I am having way to much cone movements on my main speakers and Sub when I play vinyl. Someone suggested I purchase a rumble filter from KAB audio. I notice that a lot of the cheaper phono preamps have these filters built in. When I purchased a more expensive better sounding unit ..it dosent have one. So I am wondering why dont a lot more companys sell these things if they are so important? I need to buy one and they dont seem to be very expensive $170 + another IC cable.
mattmiller

Showing 2 responses by hdm

hdm
1,067 posts
 
Well everyone has an opinion of course. Perhaps some might be interested in Harry Weisfeld's; he probably knows a bit about vinyl. Then again, maybe not?

http://db.audioasylum.com/mhtml/m.html?forum=vinyl&n=1041937&highlight=subsonic+HW&r=&search_url=%2Fcgi%2Fsearch.mpl%3Fsearchtext%3D

Sometimes (actually many times) woofer pumping will not be the result of poor setup and sometimes (actually many times) a good subsonic filter is a very good idea.

You won't "hear" negative results with a good subsonic filter-quite possible though that you may hear the positive results of not having your woofers flap around in ways that they were not intended to as well as having all the power sucked out of your amplifier by the subsonic frequencies.

I'm sure there may be bad subsonic filters out there. The KAB is not one of them (IMO), having used it. I also like the subsonic filter in my phono preamp.
hdm
1,067 posts
 
Raul:

The subsonic filter on my phono preamp is -9 dB @ 10 Hz, -18 dB @ 5 Hz and -48 dB @ 2 Hz.

Not sure what you'd be hearing down there (at least in terms of anything good on the vinyl as opposed to the negative effects of both the amplifier and the woofers trying to reproduce it), but if you are, you are a better man than me.

My system is reasonably resolving, does not suffer from a tonearm/cartridge mismatch and my ears are pretty well trained after 35 years in this hobby.

Now if you are happy, then good for you too.

Enjoy the music as well.
More to discover